How Much mph are you getting on your GS

allboost

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Hello I am just doing a poll to see what every one is avg MPG is. I think I am not getting what I should be getting GM is saying 31 MPH I am not even getting close to that :confused: I have a 2012 Regal GS 6speed MT
 

slow-90lx

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Hello I am just doing a poll to see what every one is avg MPG is. I think I am not getting what I should be getting GM is saying 31 MPH I am not even getting close to that :confused: I have a 2012 Regal GS 6speed MT



:D I got over 150 mph. If your only getting 31mph ,try stepping on the gas and shift out of 1st gear. :icon:



Off the trolololol mode, my 6sp auto turbo is rated 18,28 and if I stop driving a like an aggressive @sshole, in warm weather with a 50/50 mix, I average 28-29 MPG
 
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88 E5PR1T

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Long Island, NY
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'12 Regal GS, '64 Karmann Ghia, '06 Elise
The GS isn't rated at 31 mpg, it's rated 27 mpg hwy.

I get low 20s in mixed driving. If its pure highway I can get 27-28.
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Ct'sBuickGuy

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CT | 860
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2012 Regal GS
getting 22 combined on a consistant basis although my car only has 1200 miles on it. We will see but I would think it gets better. I can tell you if your constantly in boost your MPG will not be great, I get on it when I want but for the most part drive it normally.

6MT GS BTW
 

MountainGoat

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2012 Buick GS
Only one tank so far - but saw 20.4 mixed city/highway.
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DonRican

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2012 GS
At first I thought there was something wrong because I was getting about 19. After 3 oil changes and 10,000 miles it now stays steady at 21 with mixed driving. I also use 93 octane.
 

LouB2B

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Mentor, OH
Buick Ownership
2012 Buick Regal GS
11,800 miles, second oil change, 93 octane.
Trunk is my warehouse and is full to the brim with IT parts.
Drive it like I stole it.
City 35%, Highway 65%,

Getting 24.5 average...I'm happy.:)
 

allboost

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I HAVE BEEN GETTING 21.9 in mix driving I dont feel so bad now :)
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x10003q

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2019 GS
3000 miles 2011 T07 auto
avg 23.7
best 28.3
worst 16.6 partial 7 gal fill after all city
about 55% highway
prem only
I usually drive 75+ on the highway. I think I would get a lot better hwy if I stayed below 70.
 

jay3737

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Kalamazoo, MI
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i get about 19~20mpg. but of course this is in rush-hour traffic, a/c blasting, and lots of stop & go (1st & 2nd gear)...so i don't expect great mileage.
 

MikeC725

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Northville, MI
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2014 Regal GS AWD
3000 miles and I run premium. Auto.
Back and forth to work I'm getting about 24.
All highway I got 28.5mpg with the A/C on 4 people & full trunk @ 75mph.
 
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jeffcam1211

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20 Regal GS, 12 Regal GS (past)
22.7 here. The MPG in this car is pretty pathetic for a 4 cylinder sedan. My old car, a V8-powered 2010 Mustang GT averaged about 21MPG. The new 5.0 is even better, prolly on par with the GS
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12GSMN

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2012 Buick Regal GS
After 9K miles, I average 26.5, 70% Highway. The first 1K miles it was around 25. If you are chasing gas mileage, don't get the GS.
 

synolimit

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Akron OH
Buick Ownership
2012 GS
I keep seeing this, octane does not matter on mpg. People keep saying what they use but it doesn't matter. Also they'll add it in for other similar stories but again it doesn't affect fuel economy. Octanes only there to combat destination for turbo charged cars because of the high cylinder pressure, high heat they see. Other high hp, high compression piston motors need it too for the same reasons.

A car running down the road at about 7% injector duty cycle is going to flow the same amount of fuel whether it's 89, 91 or 93 octane, 7% is 7%. E85 is a different story because of how fast it burns but regular gas burns at the same rate. You're not going to see engine knock driving normally on 89 octane therefore the computer will not be flowing more fuel to combat detonation. Besides the first order of operations for any ecu is to pull timing not add fuel when it begins to knock. Adding fuel is something a tuner will do when tuning a car to prevent detonation but it will not do it automatically. Knock is only a timing time.

Again these cars do need 93 octane fuel. Or else they'll begin to knocking and run like crap as soon as you step on the throttle hard.
 
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